Net Sales and Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2018

Disaggregation Of Revenue [Abstract]

Disaggregation Of Revenue [Table Text Block]

	2018		2017		2016
Rolling lubricants	16.9	%	17.8	%	19.0	%
Machining and grinding compounds	16.1	%	15.8	%	14.9	%
Corrosion preventives	11.6	%	11.4	%	11.8	%
Hydraulic fluids	11.4	%	11.6	%	12.0	%
Specialty greases	9.7	%	10.0	%	10.1	%

	2018
	North						South		Consolidated
	America		EMEA		Asia/Pacific		America		Total
Net sales	$	383,471	$	233,597	$	214,157	$	36,295	$	867,520
Customer Industries
Primary metals	$	156,906	$	102,417	$	134,395	$	19,818	$	413,536
Metalworking		167,829		116,076		74,867		14,827		373,599
Coatings and other		58,736		15,104		4,895		1,650		80,385
	$	383,471	$	233,597	$	214,157	$	36,295	$	867,520
Timing of Revenue Recognized
Product sales at a point in time	$	372,392	$	233,372	$	206,112	$	36,010	$	847,886
Services transferred over time		11,079		225		8,045		285		19,634
	$	383,471	$	233,597	$	214,157	$	36,295	$	867,520